Hoyle and Johnson is an earth dam located in Marinette County, Wisconsin, built in 1974. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 900 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hoyle and Johnson
The primary purpose of Hoyle and Johnson is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Helms, Tom & Sherry (private). It impounds the Tr Peshtigo River.
The dam stands 11 feet tall and stretches 900 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 01/07/2014. That was over 12 years ago.
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Location
| State | Wisconsin |
| County | Marinette |
| Nearest City | None |
| River/Stream | Tr Peshtigo River |
| Coordinates | 45.40001, -88.29338 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 900 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 270 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Helms, Tom & Sherry |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 01/07/2014 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00996 |
| Federal ID | WI00996 |
| More Info | State Dam Safety Program |